On a fresh Arch Linux installation with Intel i7 processor and an Nvidia graphics card, I noticed during boot log messages related to a usb device filled the screen before it reached the graphical login (gdm).
During the time of this issue, the computer would fail to reboot/shutdown with logs showing that the system was trying to stop a udev process (sent sigterm signals that probably was ignored or something like that?), forcing me to do a hard shutdown (hold down power button).
journalctl logs, something strange was going on with some usb device, so I decided to see what would happen if I unplugged half of my USB devices.
I unplugged all speakers (headset and usb speakers) and my webcam, and suddenly the strange logs disappeared from boot and the computer could shutdown fine. Even stranger, was that when I plugged everything back in again, everything worked fine as if nothing had happened as well.
Feeling a bit suspicious of my usb devices (tl;dr paranoia), I decided to unplug my webcam and leave it that way.
Is this issue something to worry about? I don't think this is an issue that should happen randomly until I unplug devices, as it was consistently failing to restart/shutdown until I unplugged usb devices.
Not sure if these logs could be helpful, but:
- The dmesg log that I got during this issue can be seen here.
- The dmesg log I get now with no issue restarting/shutting-down is here.
If you need more detail, or have an idea of what's going on, please don't hesitate to post.
EDIT: The reason why I'm leaving my webcam unplugged is because it is the newest device I have on my system. My speakers I've had for a while and they've worked great. I suspect it's just a malfunctioning webcam, but I would like another's opinion of it.